I bought 3 SLW chicks 5 weeks ago and for the first 2 weeks everything was fantastic, cute little fuzzy babies. Then the unthinkable happened, their brooder lamp died in the night and when I found them the next morning they were unresponsive but still alive. It happened to be a Sunday so finding a store that was open was difficult but I did find one and bought a new lamp, got them all warmed up and everything seemed fine for a day or two. I noticed that the one chick that was usually the bravest, most curious was no longer doing her normal things, she was just lying there and wouldn't come to sit on my lap like before, I thought she was just mad at me lol o.O but over the next few days the other chicks followed suit, they became lethargic and unwilling to come play with me. Then I started to see they were all walking rather stiffly. As time has gone on they are less and less active, only walking around when they want to eat and drink and the stiff gait is more pronounced in all of them. Today I noticed that one of them is not only walking stiffly but also with her legs spread a little wider than normal when walking or running. Yes, they can walk and run but don't seem to want to. They do eat and drink normally, their poo is totally normal also. Another note: When they lay down they do so with their wings away from their bodies as if they are trying to stay balanced. They do not "wobble" per se, they walk and run in a straight, steady fashion (aside from the stiff gait), they only seem a bit wobbly when they lay down and use their wings for stability. This seems progressive and all 3 chicks are affected. I have been researching for hours and can find no disease or anything that fits. It doesn't appear to be Marek's because there is no diarrhea, it's not splayed leg, there is no curling toes, their hocks and tendons appear fine. I'm just at a loss.
Has anyone ever heard/seen anything like this? They also seem like they are not growing, the feather growth or fuzz replacement (whatever you call it when they get feathers to replace their fuzz) has also stopped. This problem affects both legs on all of the chicks. They eat medicated chick starter and have fresh water available at all times. They have a large brooder (would be comfortable for 6 or 8 chicks) with a heat lamp on one end so that they can choose to be where they are comfortable.
Any ideas would be appreciated.
Thank you in advance